Pressure reducer unit for emergency breathing systems



FIG. 1 is a top plan view of a pressure reducer unit for emergency breathing systems showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a rear elevation view thereof; and

FIG. 6 is a bottom plan view thereof.

The fragmentary broken line representation of an oxygen tank in FIG. 2 and a pressure gauge dial in FIG. 3 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a pressure reducer unit for emergency breathing systems, as shown and described. 